Acids and Bases Honors

When Sally tested an unknown substance, her red litmus paper turned blue but her blue litmus paper did not change color. What is the solution?

• Acid
• Base
• neutral
• world peace

Tags

NGSS.MS-PS1-2

According to the pH scale, which of the following would be true?

• baking soda is a weak base while drain cleaner is a strong base
• lemon is a weaker acid than a banana
• tomato and soap are acidic
• vinegar is less acidic than an apple

Which characteristics describe a base?

• sour, indicator turns red, pH less than 7, produces hydrogen ions (H⁺)
• bitter, slippery, litmus turns blue, pH greater than 7, produces hydroxide ions (OH^-)

• neutral, pH of 7
• sour, indicator turns red, pH greater than 7

Which characteristics describe an acid?

• sour, litmus paper turns red, pH less than 7, produces hydrogen ions (H⁺)

• bitter, slippery, litmus paper turns blue, pH greater than 7, produces hydroxide ions (OH^-)

• neutral, pH of 7

• sour, litmus paper turns red, pH greater than 7

What substance would do the best job of cleaning pots and pans?

• a substance with a pH of 7
• a substance with a pH of 2
• a substance with a pH of 4
• a substance with a pH of 8

Tags

NGSS.MS-PS1-2

What might happen if you mixed a strong acid with an equally strong base?

• explosive chemical reaction
• a pH neutral salt and water

• the base would destroy the acid
• the acid would destroy the base

Tags

NGSS.HS-PS1-2

An extremely strong base would have a pH of...

• 1
• 7
• 9
• 14

An extremely strong acid would have a pH of...

• 1
• 7
• 9
• 14

A weak acid would have a pH of...

• 1
• 7
• 6
• 14

A weak base would have a pH of...

• 8
• 7
• 6
• 14